func constructClosure(fn *function) (err error) {
var closure C.ffi_closure
var fptr unsafe.Pointer
var mptr unsafe.Pointer
if mptr, err = C.ffi_closure_alloc(C.size_t(unsafe.Sizeof(closure)), &fptr); mptr == nil {
return
}
if status := Status(C.ffi_prep_closure_loc((*C.ffi_closure)(mptr), &fn.Interface.ffi_cif, C.closure(C.GoClosureCallback), unsafe.Pointer(fn), fptr)); status != OK {
C.ffi_closure_free(mptr)
err = status
return
}
fn.fptr = fptr
fn.mptr = mptr
return nil
}
func destroyClosure(fn *function) {
C.ffi_closure_free(fn.mptr)
}
func free_cfn(cfn *CFn) {
C.ffi_closure_free(cfn.closure)
}